BS EN ISO 17636 1 2013

BS EN ISO 17636-1:2013 Incorporating corrigendum corri gendum February 2013

BSI Standards Publication

Non-destructive testing of welds — Radiographic testing Part 1: X- and gamma-ray techniques with film

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BS EN ISO 17636-1:2013

BRITISH STANDARD

National foreword This British Standard is the UK implementation of EN ISO 17636-1:2013. Together with BS EN ISO 17636-2:2013, it supersedes BS EN 1435:1997, which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee WEE/46, Non-destructive testing. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. © The British Standards Institution 2013. Published by BSI Standards Limited 2013 ISBN 978 0 580 82155 4 ICS 25.160.40

Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2013.

Amendments/corrigenda issued since publication Text affected Date 28 February 2013

Correction of core text

EUROPEAN STANDARD

EN ISO 17636-1

NORME EUROPÉENNE EUROPÄISCHE NORM

January 2013

ICS 25.160.40

Supersedes EN 1435:1997

English Version

Non-destructive testing of welds - Radiographic testing - Part 1: X- and gamma-ray techniques with film (ISO 17636-1:2013) Contrôle non destructif des assemblages soudés - Contrôle par radiographie - Partie 1: Techniques par rayons X ou gamma à l'aide de film (ISO 17636-1:2013)

Zerstörungsfreie Prüfung von Schweißverbindungen Durchstrahlungsprüfung - Teil 1: Röntgen- und Gammastrahlungstechniken mit Filmen (ISO 176361:2013)

This European Standard was approved by CEN on 14 December 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2013 CEN

All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.

Ref. No. EN ISO 17636-1:2013: E

BS EN ISO 17636-1:2013

EN ISO 17636-1:2013 (E)

Foreword This document (EN ISO 17636-1:2013) has been prepared by Technical Committee CEN/TC 121 “Welding” the secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 44 "Welding and allied processes". This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2013, and conflicting national standards shall be withdrawn at the latest by July 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1435:1997. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

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BS EN ISO 17636-1:2013

ISO 17636-1:2013(E)

Contents

Page

Foreword ............................................................................................................................................................ iv Introduction ......................................................................................................................................................... v 1

Scope ...................................................................................................................................................... 1

2

Normative references ............................................................................................................................ 1

3

Terms and definitions ........................................................................................................................... 2

4

Symbols and abbreviated terms .......................................................................................................... 3

5

Classification of radiographic techniques .......................................................................................... 3

6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10

General preparations and requirements ............................................................................................. 4 Protection against ionizing radiation .................................................................................................. 4 Surface preparation and stage of manufacture ................................................................................. 4 Location of the weld in the radiograph ............................................................................................... 4 Identification of radiographs ................................................................................................................ 4 Marking................................................................................................................................................... 4 Overlap of films ..................................................................................................................................... 4 Types and positions of image quality indicators ............................................................................... 4 Evaluation of image quality .................................................................................................................. 5 Minimum image quality values ............................................................................................................ 5 Personnel qualification ......................................................................................................................... 6

7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10

Recommended techniques for making radiographs ......................................................................... 6 Test arrangements ................................................................................................................................ 6 Choice of tube voltage and radiation source ................................................................................... 12 Film systems and metal screens ....................................................................................................... 13 Alignment of beam .............................................................................................................................. 15 Reduction of scattered radiation ....................................................................................................... 15 Source-to-object distance .................................................................................................................. 15 Maximum area for a single exposure ................................................................................................ 18 Density of radiograph ......................................................................................................................... 18 Processing ........................................................................................................................................... 18 Film viewing conditions ...................................................................................................................... 19

8

Test report ............................................................................................................................................ 19

Annex A (normative) Recommended number of exposures which give an acceptable examination of a circumferential butt weld ............................................................................................................ 21 Annex B (normative) Minimum image quality values ................................................................................... 26 Bibliography...................................................................................................................................................... 30

© ISO 2013 – All rights reserved

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BS EN ISO 17636-1:2013

ISO 17636-1:2013(E)

Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 17636-1 was prepared by the European Committee for Standardization (CEN) in collaboration with ISO Technical Committee TC 44, Welding and allied processes, Subcommittee SC 5, Testing and inspection of welds in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). This first edition, together with ISO 17636-2, cancels and replaces ISO 17636:2003, of which it constitutes a technical revision. ISO 17636 consists of the following parts, under the general title Non-destructive testing of welds — Radiographic testing :

 Part 1: X- and gamma-ray techniques with film  Part 2: X- and gamma-ray techniques with digital detectors The main changes are that:

 the normative references have been updated;  the document has been divided into two parts — this part of ISO 17636 applies to radiographic testing with films;

 X-ray devices up to 1 000 kV have been included;  the text has been editorially revised. Requests for official interpretations of any aspect of this part of ISO 17636 should be directed to the Secretariat of ISO/TC 44/SC 5 via your national standards body. A complete listing of these bodies can be found at www.iso.org.

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BS EN ISO 17636-1:2013

ISO 17636-1:2013(E)

Introduction This International Standard specifies fundamental techniques of radiography with the object of enabling satisfactory and repeatable results to be obtained economically. The techniques are based on generally recognized practice and fundamental theory of the subject, inspection of fusion welded joints with industrial radiographic films.


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BS EN ISO 17636-1:2013

BS EN ISO 17636-1:2013

INTERNATIONAL STANDARD

ISO 17636-1:2013(E)

Non-destructive testing of welds — Radiographic testing — Part 1: X- and gamma-ray techniques with film

1

Scope

This part of ISO 17636 specifies techniques of radiographic examination of fusion welded joints in metallic materials using industrial radiographic film techniques. This part of ISO 17636 applies to the joints of plates and pipes. Besides its conventional meaning, “pipe” as used in this International Standard covers other cylindrical bodies such as tubes, penstocks, boiler drums, and pressure vessels. NOTE

[1]

This part of ISO 17636 complies with ISO 5579.

This part of ISO 17636 does not specify acceptance levels for any of the indications found on the radiographs. If contracting parties apply lower test criteria, it is possible that the quality achieved is significantly lower than when this part of ISO 17636 is strictly applied.

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Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5576, Non-destructive testing — Industrial X-ray and gamma-ray radiology — Vocabulary ISO 5580, Non-destructive testing — Industrial radiographic illuminators — Minimum requirements ISO 9712, Non-destructive testing — Qualification and certification of NDT personnel ISO 11699-1, Non-destructive testing — Industrial radiographic film — Part 1: Classification of film systems f or industrial radiography ISO 11699-2, Non-destructive testing — Industrial radiographic films — Part 2: Control of film processing by means of reference values ISO 19232-1, Non-destructive testing — Image quality of radiographs — Part 1: Image quality indicators (wire type) — Determination of image quality value ISO 19232-2, Non-destructive testing — Image quality of radiographs — Part 2: Image quality indicators (step/hole type) — Determination of image quality value ISO 19232-4, Non-destructive testing — Image quality of radiographs — Part 4: Experimental evaluation of image quality values and image quality tables


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BS EN ISO 17636 1 2013

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